NI AWR MWOffice Interface Sonnet Advanced Project Options dialog box

Sonnet Options property page - Sonnet Project Options

The Sonnet Advanced Projects Options dialog box is opened when you click on the Advanced button in the Project Options section of the Sonnet Options property page in the NI AWR MWOffice Interface. This dialog box allows you to control various run options for your Sonnet simulation. The controls are explained below.

De-embed: Each port in a circuit analyzed by em introduces a discontinuity into the analysis results. In addition, any transmission lines that might be present introduce phase shift, and possibly, impedance mismatch and loss. Depending upon the nature of your analysis, this may or may not be desirable. De-embedding is the process by which the port discontinuity and transmission line effects are removed from the analysis results. This option is set by default.

For a detailed discussion of Sonnet's de-embedding, please see the ''De-embedding'' chapter in the Sonnet User's Guide available in PDF format through the Sonnet task bar or by selecting Help => Manuals from the main menu of any Sonnet application.

Memory Save: The system matrix is filled in single precision which reduces memory requirements for storing the matrix to one half of that of double precision. If this option is not used, the matrix is stored in double precision. This option affects only the matrix storage and the matrix solution. The precision of the matrix fill calculations is not affected.

Note:                  It is recommended that you do not use this run option when you have applied conformal meshing to polygons in your circuit or when you are running a DC Frequency sweep.

Box Resonance Info: Select this checkbox to output box resonance info during an analysis. If a potential box resonance is detected, a warning is output. For a detailed discussion of box resonance, please see ''Package Resonances'' in the Sonnet User's Guide.

Force Analysis: Selecting this checkbox forces em to perform an analysis at frequencies for which data already exists. Care should be exercised with this run option especially on larger circuits whose analysis time are significant.

Symmetry check box: You specify whether symmetry is turned on or off by clicking on the Symmetry check box. Most circuits should have symmetry off. If a circuit is symmetric about the center line parallel to the X axis, then activating symmetry results in a 4X - 8X faster analysis and reduces the memory required to 1/4 to 1/3 of what was needed before symmetry was turned on.

Additional Options: Additional options are documented in Appendix I of the Sonnet User's Guide, available in PDF format by selecting Help => Manuals from any Sonnet application.